EFIDynoTuning Forum

I'm going through the guide to tuning and stuck basically on step 1!

Make your lambse match your afr

I'm wondering what I'm trying to match to when using e10 fuel.

My stoich in tuner pro is set to 14.08 which is recommended in the comments for e10.

My afr is currently reading 14.6-.7

My lambse is reading 1

Is lambse of 1 supposed to read 14.1 or 14.7 on my afr.

Does putting the stoich in the ECU at 14.1 make the computer compensate and spit out the right fuel for it to read 14.7 or should it be a little richer and read 14.1.

I'm not familiar with how it all works yet. Any help appreciated.

lambse of 1 is supposed to read whatever you have your wideband set to report for stoich, this is why its best to change your wideband to report lambda so it can never be wrong

the stoich value in the ecu is for the actual stoich of the fuel your running

if you wire the wideband output in to the egr input tunerpro will automatically log it for you, just right click and display the actual wideband your using.

using the histograms will make life significantly easier but regardless at any given time watching the fuel error on the dash would make life easy too

ok so since my wideband is likely set up for normal gasoline my lambse of 1 is matching my 14.7 on the afr. I should be ok to run it for a bit? I will look into changing the AFR gauge but I don't think I can.

I haven't quite figured out how to run the wideband through the ECU but will work on that as well. I saw some info for it on efi dyno tuning.

Thanks for the help! Will update soon

yeah can drive her cross country no prob

this is efidynotuning

read the fuel write up and the wideband logging write up

Will do that next!